From 9f436b1a266669fe976f8bad8ced85a41f057218 Mon Sep 17 00:00:00 2001
From: Ahmed Ibrahim <aibrahim@openai.com>
Date: Tue, 23 Dec 2025 10:58:32 -0800
Subject: [PATCH] progress

---
 codex-rs/core/src/context_manager/history.rs |  2 +-
 codex-rs/docs/protocol_v1.md                 | 14 --------------
 codex-rs/protocol/src/protocol.rs            | 11 +++++++++++
 3 files changed, 12 insertions(+), 15 deletions(-)

diff --git a/codex-rs/core/src/context_manager/history.rs b/codex-rs/core/src/context_manager/history.rs
index 5ad389f6c5..d92d5b9a0d 100644
--- a/codex-rs/core/src/context_manager/history.rs
+++ b/codex-rs/core/src/context_manager/history.rs
@@ -225,7 +225,7 @@ impl ContextManager {
     }
 
     fn process_item(&self, item: &ResponseItem, policy: TruncationPolicy) -> ResponseItem {
-        let policy_with_serialization_budget = policy * 1.2;
+        let policy_with_serialization_budget = policy.mul(1.2);
         match item {
             ResponseItem::FunctionCallOutput { call_id, output } => {
                 let truncated =
diff --git a/codex-rs/docs/protocol_v1.md b/codex-rs/docs/protocol_v1.md
index 7b373a34fc..805abb0ea8 100644
--- a/codex-rs/docs/protocol_v1.md
+++ b/codex-rs/docs/protocol_v1.md
@@ -173,17 +173,3 @@ sequenceDiagram
     task2->>user: Event::TurnCompleted
     task2->>-user: Event::TaskCompleted
 ```
-
-## Key Events
-
-### SessionConfigured
-
-`Event::SessionConfigured` is emitted once after `Op::ConfigureSession`.
-
-Notable fields:
-- `session_id`: the backend-assigned session identifier (historically named `session_id` for
-  backwards compatibility).
-- `model_family`: model metadata for the model family selected for the session. This matches the
-  `/models` payload shape; the selected model slug is `model_family.slug`.
-- `approval_policy`, `sandbox_policy`, `cwd`: the effective execution and sandbox settings for the
-  session.
diff --git a/codex-rs/protocol/src/protocol.rs b/codex-rs/protocol/src/protocol.rs
index aed21a709d..ec55a7cd2a 100644
--- a/codex-rs/protocol/src/protocol.rs
+++ b/codex-rs/protocol/src/protocol.rs
@@ -1344,6 +1344,17 @@ pub enum TruncationPolicy {
     Tokens(usize),
 }
 
+// Allow core to pass model-family truncation policies (defined in openai_models)
+// into the TurnContext payload (defined in protocol) via `.into()`.
+impl From<crate::openai_models::TruncationPolicy> for TruncationPolicy {
+    fn from(value: crate::openai_models::TruncationPolicy) -> Self {
+        match value {
+            crate::openai_models::TruncationPolicy::Bytes(bytes) => Self::Bytes(bytes),
+            crate::openai_models::TruncationPolicy::Tokens(tokens) => Self::Tokens(tokens),
+        }
+    }
+}
+
 #[derive(Serialize, Deserialize, Clone, JsonSchema)]
 pub struct RolloutLine {
     pub timestamp: String,